Question: What is the Class IB flammable liquid with the highest standard enthalpy of formation whose physically interacts with is Potassium inwardly-rectifying channel, subfamily J, member 5 ?
Paraphrase: Which flammable liquid, under Class IB, physically interacting with Potassium inwardly-rectifying channel's highest standard enthalpy of formation, member 5 of sufamily J?
SPARQL (Wikidata): select ?ent where { ?ent wdt:P31 wd:Q21009055 . ?ent wdt:P3078 ?obj . ?ent wdt:P129 wd:Q21497881 } ORDER BY DESC(?obj)LIMIT 5 
Answer: Ethanol, Ethanol